Cyclostationary Modeling of Surface Electromyography Signal During Gait Cycles and Its Application for Cerebral Palsy Diagnosis

doi:10.1007/s12204-018-2023-9

Journal of Shanghai Jiao Tong University (Science) ›› 2018, Vol. 23 ›› Issue (Sup. 1): 56-61.doi: 10.1007/s12204-018-2023-9

Cyclostationary Modeling of Surface Electromyography Signal During Gait Cycles and Its Application for Cerebral Palsy Diagnosis

YU Liang (余亮), YAN Li (严莉), CHEN Mengjie (陈梦婕), DONG Liangchao (董良超)

(1. Institute of Vibration, Shock and Noise, Shanghai Jiao Tong University, Shanghai 200240, China; 2. State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, China; 3. Department of Pediatric Orthopedics, Children’s Hospital of Shanghai Jiao Tong University, Shanghai 200062, China)

出版日期:2018-12-28 发布日期:2018-12-26
通讯作者: YU Liang (余亮) E-mail: liang.yu@sjtu.edu.cn

Cyclostationary Modeling of Surface Electromyography Signal During Gait Cycles and Its Application for Cerebral Palsy Diagnosis

YU Liang (余亮), YAN Li (严莉), CHEN Mengjie (陈梦婕), DONG Liangchao (董良超)

(1. Institute of Vibration, Shock and Noise, Shanghai Jiao Tong University, Shanghai 200240, China; 2. State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, China; 3. Department of Pediatric Orthopedics, Children’s Hospital of Shanghai Jiao Tong University, Shanghai 200062, China)

Online:2018-12-28 Published:2018-12-26
Contact: YU Liang (余亮) E-mail: liang.yu@sjtu.edu.cn

摘要/Abstract

摘要： Cerebral palsy (CP) is a group of permanent movement disorders that appear in early childhood. The electromyography (EMG) signal analysis and the gait analysis are two most commonly used methods in the clinic. In this paper, a cyclostationary model of the EMG signal is proposed. The model can combine the aforementioned two methods. The EMG signal acquired during the gait cycles is assumed to be cyclostationary due to the physiological characteristics of the EMG signal production. Then, the spectral correlation density is used to analyze the cyclic frequency (corresponding to the gait cycles) and spectral frequency (the frequency of EMG signal) in a waterfall representation of the two kinds of frequencies. The experiments show that the asymptomatic (normal) subjects and symptomatic subjects (with CP) can be distinguished from the spectral correlation density in a range of cyclic frequencies.

关键词: electromyography (EMG) signal, gait cycle , spectral correlation density, cyclostationary modeling , cerebral palsy (CP) diagnosis

Abstract: Cerebral palsy (CP) is a group of permanent movement disorders that appear in early childhood. The electromyography (EMG) signal analysis and the gait analysis are two most commonly used methods in the clinic. In this paper, a cyclostationary model of the EMG signal is proposed. The model can combine the aforementioned two methods. The EMG signal acquired during the gait cycles is assumed to be cyclostationary due to the physiological characteristics of the EMG signal production. Then, the spectral correlation density is used to analyze the cyclic frequency (corresponding to the gait cycles) and spectral frequency (the frequency of EMG signal) in a waterfall representation of the two kinds of frequencies. The experiments show that the asymptomatic (normal) subjects and symptomatic subjects (with CP) can be distinguished from the spectral correlation density in a range of cyclic frequencies.

Key words: electromyography (EMG) signal, gait cycle , spectral correlation density, cyclostationary modeling , cerebral palsy (CP) diagnosis

中图分类号:

R 318

YU Liang (余亮), YAN Li (严莉), CHEN Mengjie (陈梦婕), DONG Liangchao (董良超). Cyclostationary Modeling of Surface Electromyography Signal During Gait Cycles and Its Application for Cerebral Palsy Diagnosis[J]. Journal of Shanghai Jiao Tong University (Science), 2018, 23(Sup. 1): 56-61.

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Cyclostationary Modeling of Surface Electromyography Signal During Gait Cycles and Its Application for Cerebral Palsy Diagnosis

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